Electricity Distribution Code Review – Technical Standards Draft decision briefing 16 Dec 2019 and 13 Jan 2020
Welcome Aaron Yuen Senior Regulatory Manager, Energy Reform and Analysis
Today’s agenda Time Item 3:30 PM Welcome and introductions Today’s purpose and the Electricity Distribution Code 3:35 PM 3:40 PM Draft decision presentation 4:05 PM Q & A 4:25 PM Next steps 4:30 PM Close 3
Today’s purpose • Provide an overview on our draft decision • Project status and next steps • Stakeholder Q & A on our draft decision 4
Status of the code review Technical standards stream Review Approach Consultation Final Issues Draft launch paper Close Decision paper Aug Decision 2019 Dec 2019 Dec 2018 April 2019 Jan 2020 Mar 2020 Customer service Current stage standards stream of review Draft Final Decision Decision Mar 2020 May 2020 Wider review 5 (2020 onward)
Electricity Distribution Code The Electricity Distribution Code (EDC) is… Customer protections Information Technical and standards processes 6
Electricity Distribution Code – Where it applies Electricity Distribution Code Generation Transmission Distribution Retail Domestic users and businesses Industrial users 7
Speaker Steve Oh Senior Analyst
Voltage standard – Proposed changes • Introduce flexible voltage standard (AS 61000.3.100) for the low voltage distribution system • Maintain the existing customer protection framework with revised parameters. This continues the code’s interaction with our Guideline 11 (Voltage variation compensation) • Introduce new information reporting requirements for distributors to improve transparency and leverage smart meter technology 9
Voltage standard - Concept EDC voltage limits +10% Voltage profile of supply Distance 230V -6% Solar customer 10
Voltage standard - Current Voltage (V) Code operating limits where compensation +50% could apply +14% +10% 253 230 216 -6% -10% Supply point -100% 0 Time Solar Customer 11
Voltage standard – Proposed change & customer protection Electricity Distribution Code Australian Standard (Current) (AS 61000.3.100) - Proposed Voltage (V) Voltage (V) Code operating limits + 50% +50% where compensation Customer protection upper could apply threshold (Guideline 11) 260V (+13%) +14% +10% V 99% = 253V (+10%) 253 253 AS 61000.3.100 target range 230 230 V 1% = 216V (- 6%) 216 216 -6% -10% 207V (-10%) Customer protection lower threshold (Guideline 11) - 100% -100% 0 0 Time Frequency of network experiencing different 12 voltages levels
Voltage standard – Current Voltage (V) +50% +14% +10% 253 230 216 -6% -10% Supply point -100% 0 Time Solar Customer 13
Voltage standard – Proposed (Flexible) Australian Standard (AS 61000.3.100) Voltage (V) Customer protection region +50% 260V (+13%) V 99% = 253V (+10%) AS 61000.3.100 230 target range V 1% = 216V (- 6%) 207V (-10%) Supply point Customer protection region - 100% 0 Frequency of network Solar experiencing different Customer voltages levels 14
Voltage standard – New reporting requirements Distributor Zone Shortest Feeder substation Section 2 Section 1 Voltage 200 100 Time Section information 0 12 AM12 AM12 AM12 AM 3 months aggregate voltage information for the section 15
Other technical standards – Proposed updates We propose updating legacy standards and referenced documents to reflect current standards or industry practices. Some of these are: • Over voltage control (managing low voltage disturbances) • Powerline signals (using the power line as a communication medium to transmit signals) • Referencing latest safety regulations 16
Other technical standards – Proposed harmonisation We propose aligning some standards with the National Electricity Rules or other jurisdictional approaches, where appropriate. Some of these are: • Power factor (the effective use of electricity) • Negative sequence (the allowable level of system imbalance) • National register of Distributed Energy Resources 17
Technical standards not being amended We propose not to change a small number of technical provisions. Some of these are: • Supply frequency standards • Load balance • Impulse voltage 18
Other general updates We proposed a range of other general updates to reflect current legislation, regulations, referenced documents and definitions. Some of these are: • Updating various AER definitions with current references • Updating AEMO documents with current references • Other small updates 19
Next steps Technical standards stream Draft Consultation Final Decision Close Decision 3 Dec 2019 20 Jan 2020 Mar 2020 Make your submissions to ‘Engage Victoria’ by 20 January 2020 20
Questions / Activity 21
Questions / Activity 1. Spend 5 minutes to write down the questions you may have regarding the draft decision 2. Spend another 5 minutes to discuss with your table peers and write down the top two questions the table wish to pose for the draft decision Q & A 22
Continue the conversation www.esc.vic.gov.au /company/essential-services-commission @EssentialVic www.engage.vic.gov.au EDC Review edc.review@esc.vic.gov.au Email 23
Thank you Footer 24
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